ORIGINAL: Vapodog
The .204 Ruger was developed by Hornady.....NOT RUGER.
Further it was being researched and developed several years before the WSMs and WSSMs came out.
I have a small sample of the first run of 204 bullets Hornady made in 1998.
Why the 222 mag case?.......I suspect there was royalties to be paid to the woodchuck den if they came out with what is called the 20 tactical. So the 222 mag case permitted an escape from the royalties.
developed by hornady for ruger